diff options
| author | Kay Sievers <kay.sievers@vrfy.org> | 2009-07-08 02:04:49 +0200 |
|---|---|---|
| committer | Kay Sievers <kay.sievers@vrfy.org> | 2009-07-08 02:04:49 +0200 |
| commit | 871a36bd7e37a9d27e633b93ae0119a4553195ec (patch) | |
| tree | 2bd56b520e33bb26f1182baf7bfc17baa4feda1f /libudev/test-libudev.c | |
| parent | a71369b0db359cddeb207a317588b175630dcca8 (diff) | |
libudev: enumerate - sort with qsort()
On machines with many thousands of devices:
$ time find /sys -name uevent | wc -l
74876
real 0m33.171s
user 0m3.329s
sys 0m29.719s
the current udevtrigger spends minutes sorting the device list:
$ time /sbin/udevadm trigger --dry-run
real 4m56.739s
user 4m45.743s
sys 0m7.862s
with qsort() it looks better:
$ time udev/udevadm trigger --dry-run
real 0m6.495s
user 0m0.473s
sys 0m5.923s
Diffstat (limited to 'libudev/test-libudev.c')
| -rw-r--r-- | libudev/test-libudev.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libudev/test-libudev.c b/libudev/test-libudev.c index db08d4845f..34b3de86f1 100644 --- a/libudev/test-libudev.c +++ b/libudev/test-libudev.c @@ -329,6 +329,26 @@ static int test_enumerate(struct udev *udev, const char *subsystem) test_enumerate_print_list(udev_enumerate); udev_enumerate_unref(udev_enumerate); + printf("enumerate 'net' + duplicated scan + null + zero\n"); + udev_enumerate = udev_enumerate_new(udev); + if (udev_enumerate == NULL) + return -1; + udev_enumerate_add_match_subsystem(udev_enumerate, "net"); + udev_enumerate_scan_devices(udev_enumerate); + udev_enumerate_scan_devices(udev_enumerate); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); + udev_enumerate_scan_devices(udev_enumerate); + test_enumerate_print_list(udev_enumerate); + udev_enumerate_unref(udev_enumerate); + printf("enumerate 'block'\n"); udev_enumerate = udev_enumerate_new(udev); if (udev_enumerate == NULL) |